DPG Phi
Verhandlungen
Verhandlungen
DPG

Dresden 2020 – scientific programme

The DPG Spring Meeting in Dresden had to be cancelled! Read more ...

Parts | Days | Selection | Search | Updates | Downloads | Help

MA: Fachverband Magnetismus

MA 22: Frustrated Magnets - Spin Liquids 1 (joint session TT/MA)

MA 22.10: Talk

Tuesday, March 17, 2020, 12:00–12:15, HSZ 304

Dynamics of an SU(2)-symmetric Kitaev model: spectroscopic signatures of fermionic magnons — •Willian Massashi Hisano Natori1 and Johannes Knolle1,2,31Imperial College London, London, United Kingdom — 2Technische Universitat Munchen, Garching, Germany — 3Munich Center for Quantum Science and Technology, Munich, Germany

In this work, we study the dynamics of an integrable Kugel-Khomskii Hamiltonian defined as an extension of the Kitaev honeycomb model. This model displays a global SU(2) symmetry that leads to S=1 fermionic excitations. We show that these fermions' dynamical response is exactly computed using a few-particle approach and can be experimentally probed with resonant inelastic x-ray scattering. The techniques developed to uncover the dynamics of the Kitaev model are used to compute the expected neutron scattering response. We show that the SU(2) symmetric model exhibits a vison gap three times larger than the spin-1/2 Kitaev model and a broader band of excitations due to the presence of additional Majorana flavors.

100% | Mobile Layout | Deutsche Version | Contact/Imprint/Privacy
DPG-Physik > DPG-Verhandlungen > 2020 > Dresden